Reagan Sidaris Bennos, FRM
Corinth
Summary
Experienced risk management leader and accomplished data scientist with over 16 years of financial services experience designing and operationalizing credit, liquidity, and market risk management frameworks across major institutions. Currently shaping OCC’s strategic direction in stress testing and liquidity modeling, including the integration of the NSCC/OCC Accord, while driving regulatory remediation and collaboration with the SEC, CFTC, and Federal Reserve Bank of Chicago. Prior to this role I served as the Board-appointed Risk Officer and Derivatives Risk Manager at GuideStone Funds, where I led several SEC compliance initiatives under Rule 2a-5, 18f-4, and 22e-4. I was responsible for implementing BlackRock Aladdin across the entire mutual fund complex and standing up a new risk management framework which included asset fair valuation, liquidity risk, portfolio ES/VaR estimation, stress testing, and transaction cost monitoring programs for dozens of mutual funds and sub-adviser portfolios.
Overview
16
16
years of professional experience
1
1
Certification
Work History
Principal – Stress Testing and Liquidity
at Options Clearing Corporation (OCC)
Dallas
09.2023 - Current
- Product Owner and FRM Project Leader for NSCC / OCC Accord and T+1 Settlement Initiative including adoption of NSCC Guaranty Substitution Payment (“GSP”) into liquidity risk management framework and stressed liquidity methodology
- Lead SEC examination effort of NSCC/OCC Accord and OCC Liquidity Risk Management Framework
- Oversee development of new DTCC Risk API integration and intraday GSP component (Value at Risk, Mark to Market, Liquidity Need) projection processes
- Led internal audit validation effort and control implementations which remediated over 50 regulatory gaps identified by the SEC and CFTC.
- Implement new collateral optimization model in Python to enable clearing members to optimize across margins and stress testing / clearing fund simultaneously.
- Assist in development of new dynamic VIX model enhancement to OCC’s comprehensive stress testing system by utilizing smoothed implied volatility surfaces along with piecewise linear regression to predict shifts in ATM Volatility relative to price movements in the S&P 500 index at various initial levels of VIX.
- Utilize Principal Components Analysis ("PCA") and Mahalanobis Distances to derive new sector-based stress test scenarios.
Risk Officer
at GuideStone Capital Management
Dallas
07.2021 - 09.2023
- Board appointed Risk Officer of the Investment Adviser and Derivatives Risk Manager (“DRM”) with two direct reports.
- Chairperson of Best Execution, Derivatives Risk Management, Liquidity Risk Management, and Valuation Committees of GuideStone Funds and representative to the Board of GuideStone Funds.
- Implemented SEC Rule 18f-4 compliance program with BlackRock Aladdin integration, Northern Trust integration, and enforcement of written methodologies, policies, procedures, and risk guidelines.
- Oversaw risk model calibrations, analytics, and regulatory reporting pertaining to relative and absolute VaR in Monte Carlo simulations, VaR model backtesting, gross notional exposure monitoring, and extreme but plausible stress testing scenarios for 27 registered mutual funds and 80 sub-adviser portfolios.
- Maintained SEC Rule 2a-5 valuation program including ICE foreign equity fair value modeling, fixed income back testing, cross-vendor pricing performance analytics, and ad hoc valuation models.
- Executed SEC Rule 22-4 liquidity risk program, including liquidity classifications, market impact assessments, fund flow simulations and multi-day predictions across various participant types.
- Implemented new trade-level cost analytics for all sub-advisers participating in equity and FX markets.
Director Of Risk Management and Systems
at Options Clearing Corporation (OCC)
Dallas
08.2019 - 07.2021
- Product Owner of Real-Time Risk System within Enterprise Renaissance Project.
- Led a team of dedicated business analysts, quants, and developers to define functional requirements for FRM's risk system architecture to support real-time risk management activities for all cleared option, futures, stock loan, and collateral activity.
- Responsible for project planning, executing an agile approach to software development, and communicating progress to senior management.
- Designed and coded proof of concept for cross-system data analytics architecture to enable clearing member portfolio risk attribution across price smoothing, margins, stress testing, and real-time p/l engine.
Manager Of Stress Testing and Liquidity Risk
at Options Clearing Corporation (OCC)
Dallas
10.2017 - 07.2019
- Collaborated with senior management, counterparties, and clearing members on creating an entirely new liquidity risk management framework for OCC and presented Financial Safeguards policy proposals to the Board of Directors and SEC
- Led efforts as product owner to revamp the internal stressed liquidity forecasting system and test OCC's financial resource adequacy amid future liquidity demands arising from a wide range of stress test scenarios over multiple time horizons
- Managed communications and training with 2 direct reports and several consultants on the design and implementation of the stressed liquidity methodology.
- Designed liquidity data models, reporting, and User Acceptance (UAT) Test cases for each liquidity project sprint and consulted with clearing members on external integration
Senior Risk Analyst - Stress Testing and Liquidity
at Options Clearing Corporation (OCC)
Dallas
03.2015 - 09.2017
- Analyzed stress testing results and assumptions across in house and external (Nasdaq Hanweck / IBM Algo) risk systems during model development and collaborated with various business units and model developers for validation.
- Consulted with clearing members on clearing fund exposures and tail risk mitigation strategies to reduce clearing fund impacts.
- Utilized advanced analytics with SQL, Python, and Tableau to assess stress test model parameters and assumptions.
- Assisted quants with methodology design and deployment of hypothetical scenarios for implied volatility, price, and interest rate shocks.
Senior Investment Data Analytics Analyst
at Fidelity Investments
Westlake
10.2012 - 03.2015
- Led the Predictive Analytics Team to facilitate proactive model input monitoring, reducing modeling errors for the Equity and Fixed Income Groups
- Developed heuristics and risk control methodologies to identify irregularities and eliminate inaccuracies in a dynamic financial data universe.
- Designed and implemented new business rules in a real-time exception engine to capture statistical anomalies in derivative instrument types.
- Analyzed model output for mutual fund portfolio risk and performance metrics.
Senior Securities Analyst
at Barbnet Investment Company
Fort Worth
08.2011 - 10.2012
- Hedged and rolled excess currency risk through daily electronic spot and forward FX trade executions.
- Assisted with pricing OTC option, corporate bond, equity swap, warrant, and forward positions.
- Evaluated option risks in portfolio managers' strategies and modeled/stressed portfolio valuation.
- Advised senior management on prime brokerage capital usage, margin efficiency, and asset concentrations using linear optimization models.
Operations Analyst
at Barbnet Investment Company
Fort Worth
06.2009 - 08.2011
Education
Master of Science - Data Science: Analytics and Modeling
Northwestern University, School of Professional Studies
Evanston, IL03.2024
Master of Business Administration (M.B.A.) -
Texas A&M University- Commerce
Commerce, TX05.2012
BBA - Economics
University Of North Texas, College of Business
Denton, TX12.2008
Skills
- Proficient in Alteryx / Python / R / SQL / Tableau
- Microsoft Excel - Data Modeling and Visualization
- Statistical Modeling – GLMs / PCA / Factor Modeling / Derivatives Valuation / Monte Carlo Simulation / Portfolio Optimization / Stress Testing
Certification
GARP Financial Risk Manager (FRM)
Timeline
Principal – Stress Testing and Liquidity
at Options Clearing Corporation (OCC)
09.2023 - Current
Risk Officer
at GuideStone Capital Management
07.2021 - 09.2023
Director Of Risk Management and Systems
at Options Clearing Corporation (OCC)
08.2019 - 07.2021
Manager Of Stress Testing and Liquidity Risk
at Options Clearing Corporation (OCC)
10.2017 - 07.2019
Senior Risk Analyst - Stress Testing and Liquidity
at Options Clearing Corporation (OCC)
03.2015 - 09.2017
Senior Investment Data Analytics Analyst
at Fidelity Investments
10.2012 - 03.2015
Senior Securities Analyst
at Barbnet Investment Company
08.2011 - 10.2012
Operations Analyst
at Barbnet Investment Company
06.2009 - 08.2011
Master of Science - Data Science: Analytics and Modeling
Northwestern University, School of Professional Studies
Master of Business Administration (M.B.A.) -
Texas A&M University- Commerce
BBA - Economics
University Of North Texas, College of Business
Similar Profiles
Pranaya Pranaya null
Senior AWS Full Stack Developer at Options Clearing Corporation (OCC)Senior AWS Full Stack Developer at Options Clearing Corporation (OCC)
NANCY VERMANANCY VERMA
DIRECTOR, FINANCIAL RISK MANAGEMENT at OPTIONS CLEARING CORPORATIONDIRECTOR, FINANCIAL RISK MANAGEMENT at OPTIONS CLEARING CORPORATION
Kuriakose Jacob KandathilKuriakose Jacob Kandathil
Data Streaming Engineer — Risk Platform at Options Clearing Corporation (Contract)Data Streaming Engineer — Risk Platform at Options Clearing Corporation (Contract)
Breanna TalleyBreanna Talley
Tutor at April BaggetTutor at April Bagget
Angel LainhartAngel Lainhart
Certified Nursing Assistant at Corbin Health & Rehabilitation CenterCertified Nursing Assistant at Corbin Health & Rehabilitation Center